# A049218 (b-file synthesized from sequence entry) 1 1 2 0 3 1 4 -2 5 0 6 1 7 0 8 -8 9 0 10 1 11 24 12 0 13 -20 14 0 15 1 16 0 17 184 18 0 19 -40 20 0 21 1 22 -720 23 0 24 784 25 0 26 -70 27 0 28 1 29 0 30 -8448 31 0 32 2464 33 0 34 -112 35 0 36 1 37 40320 38 0 39 -52352 40 0 41 6384 42 0 43 -168 44 0 45 1 46 0 47 648576 48 0 49 -229760 50 0 51 14448 52 0 53 -240 54 0 55 1 56 -3628800 57 0 58 5360256 59 0 60 -804320 61 0 62 29568 63 0 64 -330 65 0 66 1